Grizzly G0458 - Manual (Page 31)

Model G0458 (Mfg. Since 5/11)
-29-
Symptom possible Cause possible Solution
machine has vibration or
noisy operation. 1. motor or component is loose.
2. V-belts are worn or loose.
3. motor fan is rubbing on fan cover.
4. pulley is loose.
5. machine is incorrectly mounted to the floor.
6. Cast iron motor mount is at fault.
7. motor bearings are at fault.
1. inspect for stripped/damaged bolts/nuts,
replace/re-tighten with thread locking fluid.
2. inspect belts, replace and re-tension (see
pages 27 & 30).
3. replace dented fan cover/damaged fan.
4. remove pulley, replace shaft, pulley,
setscrew, and key as required, and realign.
5. machine has loose anchor studs in floor, or
is sitting on uneven floor. replace/tighten
relocate as required.
6. Using leverage and a small pry bar to
inspect, carefully replace loose/broken
mounts.
7. Check bearings, replace motor or bearings
as required.
sanding operations
Symptom possible Cause possible Solution
Vibration when sanding. 1. loose drum bearings.
2. Worn drum bearings. 1. tighten drum bearings.
2. replace drum bearings.
grinding, screeching,
or rubbing noise when
sanding drums are
powered up. 1. drum bushings lack sufficient oil.
2. drum bushings are worn and need
replacement.
1. oil the drum bushings (see page 25).
2. replace the drum bushings.
Short V-belt lifespan. 1. pulleys not aligned correctly.
2. improperly tensioned. 1. Align pulleys (see page 31).
2. properly tension V-belts (see page 27).
machine lacks power;
drums stop turning under
load. 1. V-belts loose.
2. too much pressure on pressure plates. 1. tighten V-belts (see page 27).
2. raise the pressure plates ( page 35).
Feed belt slips under load. 1. Feed belt is too loose.
2. too much load. 1. tension feed belt (see page 32).
2. decrease load.
Feed belt tracks to one
side or hits the feed table
mounts. 1. Feed belt tracking is incorrect. 1. track the feed belt so it runs straight (see
page 31).
Excessive snipe. 1. lack of outfeed support.
2. too much pressure from pressure plates.
3. too much pressure from the rear pressure
plate.
1. Set up an outfeed table or have someone
catch the workpiece as it comes out.
2. raise the pressure plates ( page 35).
3. raise the rear pressure plate ( page 35).
Workpiece kicks out of
sander. 1. not enough pressure from the pressure
plates.
1. lower the pressure plates ( page 35).
Sandpaper tears off drums
during operation. 1. nail/staple in workpiece.
2. Sandpaper not tightened or fastened
correctly.
1. Sand only clean workpieces.
2. install the sandpaper correctly (see
page
22).
table elevation controls
are stiff and hard to adjust. 1. table lift screws are dirty or loaded with
sawdust.
2. Chain idler sprocket cap screws have been
over tightened.
3. Elevation handle helical gear is dirty or
loaded with sawdust.
1. Clean and re-grease table lift screws (see
page 26).
2. Adjust the cap screws on the idler sprocket
so it can spin freely.
3. Clean and re-grease the helical gear (see
page 26).